这些表层堆积物覆盖面积达10平方公里（4平方英里）；

those deposits cover more than10 square kilometers (4 square miles).

youdao

而朊病毒引起脑细胞垃圾的堆积也许不是灾难被引起的唯一方式。

That infectious prions cause rubbish to accumulate in brain cells may not be the only way in which they cause damage.

youdao

因为大石头的堆积不能完全填满空间，这些代替之前的105立方米的垃圾。

Because the heap of boulders does not fill the space perfectly, this represents the equivalent of 105m cubic meters of landfill.

youdao